Assertion :Magnification of plane mirror is 1. Reason: The image formed by a plane mirror is as far behind the mirror as the object is in front of it.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In the case of a plane mirror, the size of the image is equal to the size of the object. Thus, the magnification is one.
On the other hand, another property of a plane mirror is that the image distance is always equal to the object distance from the mirror.
So, both assertion and reason are correct. But the reason talks about a different property and hence does not explain the assertion.

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